426914993 has 2 divisors, whose sum is σ = 426914994. Its totient is φ = 426914992.

The previous prime is 426914951. The next prime is 426915007. The reversal of 426914993 is 399419624.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 401281024 + 25633969 = 20032^2 + 5063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-426914993 is a prime.

It is a super-2 number, since 2×426914993² = 364512822496380098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (426914903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 213457496 + 213457497.

It is an arithmetic number, because the mean of its divisors is an integer number (213457497).

Almost surely, 2^426914993 is an apocalyptic number.

It is an amenable number.

426914993 is a deficient number, since it is larger than the sum of its proper divisors (1).

426914993 is an equidigital number, since it uses as much as digits as its factorization.

426914993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 419904, while the sum is 47.

The square root of 426914993 is about 20661.9213288600. The cubic root of 426914993 is about 752.9748472957.

The spelling of 426914993 in words is "four hundred twenty-six million, nine hundred fourteen thousand, nine hundred ninety-three".